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Monitor Specifications That Actually Matter

Computing · Updated 2026-08-21

AOC 22B15H2 21.45” Full HD IPS Monitor | 120Hz Refresh Rate | 1ms MPRT | Adaptive Sync | 3-Sided Frameless | Low Blue Mo

Monitor listings quote a dozen numbers. Three of them determine how the screen will feel to use; several of the rest are measured in ways that make comparison meaningless.

1. Panel type — the one with the biggest effect

PanelStrengthsWeaknessesBest for
IPS Accurate colour, wide viewing angles Weaker blacks, some backlight glow General use, work, photo and video
VA Deep blacks, high contrast Colour shifts off-axis; slower transitions Films, dark rooms
TN Fastest, cheapest Poor colour and narrow viewing angles Competitive gaming on a budget
OLED True blacks, near-instant response Expensive; static-image retention risk Media, high-end use

For most people buying one monitor for everything, IPS is the right default. TN is a false economy unless you specifically need the speed.

2. Resolution, relative to size

Resolution alone means little; what matters is pixel density — pixels spread across a given diagonal.

SizeComfortable resolutionNotes
22–24 inch1920×1080Fine. 1440p at 24" is sharp but small text.
27 inch2560×14401080p at 27" looks visibly coarse.
32 inch2560×1440 or 3840×21604K needs scaling to be readable.

The common mistake is a 27-inch 1080p monitor. It is cheap and the pixels are large enough to see, which makes text look soft at normal viewing distance.

3. Refresh rate

60Hz is standard. 75Hz costs almost nothing extra and is mildly nicer. 120Hz and above is a real, visible difference in motion — but only if something is producing that many frames.

The numbers to largely ignore

Contrast ratio. "Dynamic" contrast figures — 10,000,000:1 and similar — are produced by turning the backlight down in dark scenes. Static contrast is the meaningful number, and it is rarely quoted. Roughly: IPS around 1000:1, VA 2500–4000:1.

Response time. Quoted as 1ms almost universally, measured in a best case (grey-to-grey with overdrive) that does not reflect normal transitions. It is not comparable between manufacturers.

Peak brightness with HDR badges. Entry-level HDR certification can be met by panels that cannot display meaningful HDR. If HDR matters, look for a high sustained brightness figure and local dimming, not a logo.

The things people forget until the monitor arrives

A sensible default

27-inch, 2560×1440, IPS, 75Hz or higher, height-adjustable stand or VESA mount, matte finish. That covers work, browsing and casual gaming without paying for specifications that will not be used.

Browse 27-inch 1440p IPS monitors on Amazon

Browse monitor arms on Amazon